The magazine is not dated. There is a one page
article, the context of which suggests that it was published in April 1965. SPIN
was published in Wallasey, Cheshire and is just across the river from Liverpool.
It was associated with a Liverpool folk group called The Spinners (sometimes
known as the Liverpool Spinners), hence the name of the magazine. They were not
a commercial folk group like the American ones but were quite popular in Britain
in the 1960s and the 1970s. (Thanks
to Ian Woodward for this information)